impetus

• n. 衝動；促進；衝動

im-, 入る, 作る, -pet, 追いかける, 衝突する, 語源的には compete, appetiteと同じ。

impetus (n.)

early 15c., impetous "rapid movement, rush;" 1640s, with modern spelling, "force with which a body moves, driving force," from Latin impetus "attack, assault, onset, impulse, violence, vigor, force, passion," related to impetere "to attack," from assimilated form of in- "into, in, on, upon" (see in- (2)) + petere "aim for, rush at" (see petition (n.)).

1. This is the primary impetus behind the economic recovery.

これは経済回復を促す主要な原動力である。

2.The treaty gave a fresh impetus to trade.

この条約は双方の貿易をさらに一歩前進させた。

3.Children need an impetus to study.

児童学習には動力が必要である。

4.This is an encouragement[ impetus ]to us.

これは私たちに対する鞭撻です。

5.Her speech gave an impetus to my ideas.

彼女の話は私の考えをかき立てた。